[utils] Impl clip_grad_norm for ColoTensor and ZeroOptimizer #1442
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* remade clip_grad_norm_fp32() with the new ColoTensor API * test world size * remove old function * preserve old function * simplify program, speedup * delete useless import * remade clip_grad_norm_fp32() with the new ColoTensor API * test world size * remove old function * preserve old function * simplify program, speedup * delete useless import Co-authored-by: csric <mkkt_bkkt@mail.ustc.edu.cn>
ver217
changed the title
feifeibear
approved these changes
Aug 11, 2022
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How can I use this function under lightning? It seems that "on_after_backward()" hook does not work... |
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Grads can be on CUDA and CPU. They can be either fp16 or fp32.